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I have my own registered Engineering Prototyping Company, where we help customers go from idea to manufacturing. We offer a full-cycle prototyping journey: Idea--Firmware--3D design--PCB design--CAD/CAM--Testing--App--Sourcing and Manufcaturing in China We help with Management and Engineering ONE stop for all prototyping needs: With over 7 years of experience, we can help you design your electronics, produce your 3D model, CAD/CAM and manufacture your prototype. Electronics and Firmware - Interfaces: USB, Ethernet - Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols - Wireless: BLE, WiFi, UWB - Security: AES, SSL/TLS - Multi-layer PCB design experience with: • Microprocessor: ARM Cortex-M3, Cortex-M4, • STM32, ESP32, Atmega, Nordic •. Low-power chip: Nordic nRF52840, nRF5340, nRF52832, ESP32, STM32WL series • SoM, custom board design for: CM4, Rasp, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126 Rockchip, TI AM6254 ,... • Power supply: DC-DC (isolated, Flyback, Boost, Buck, LDOs…). • Communication circuit with motor driver: BLDC, AC servo, DC servo…via I/O, ADC and CAN. • Wireless, IoT: RF, Wifi, Bluetooth 4.0, GSM (3G, 4G/LTE), LoraWAN... - Experience in building evaluation kits such as Arduino, ESP32, ESP8266, STM32... - BOM creation from favourite suppliers: Digikey/Mouser/JLCPCB, LCSC... - Knowledge of proper layout techniques for EMC and EMI compliance. - Knowledge of DFA, DFM, and PCB manufacturing and assembly processes. - Firmware development using C, C++, and Python language, QT - UX/UI design for STM32, ESP32, Rasp Pi, using Figma, TouchGFX, LVGL - IoT: MQTT, Thingsboard, AWS, Blynk.. Industrial and Mechanical Design: •CAD for machines, manufacturing (DFM), 3D printing, reverse engineering (Autodesk Inventor and Fusion 360, SolidWorks, Siemens NX, ) • CAD product design, parametric CAD design and rendering (Autodesk Inventor and Fusion 360, SolidWorks) - Physical product prototyping and Manufacturing: -Making the casing ( metal and plastic) in-house without machines. Fusion 360, SolidWorks, Blender, We offer travel to location. We offer 24/7 support. English, Russian, Bulgarian. Japanese, Spanish

I am a CCIE-certified Network Engineer with over 14 years of experience designing, upgrading, and supporting on premise and hybrid enterprise network infrastructure across healthcare, financial services, professional services, public sector, and managed services environments. My background is rooted in deep hands-on expertise across routing and switching, data center networking, WAN architecture, and advanced troubleshooting in complex, multi-vendor environments. I have worked extensively with platforms including Cisco, Palo Alto, Infoblox, Arista, and Juniper. Throughout my career, I have led large-scale remote and hybrid deployments, stabilized critical network environments, and improved uptime, performance, and scalability across both data centers and distributed enterprise systems. I bring a strong ability to partner cross-functionally with infrastructure, security, and operations teams to deliver resilient, high-performing network solutions. CORE COMPETENCIES: ★ Data Center Architecture ★ Routing & Switching ★ SD-WAN ★ Network Security ★ WAN Architecture ★ Infrastructure Modernization ★ Advanced Troubleshooting ★ Cisco Nexus & Catalyst ★ Palo Alto / Fortinet Firewalls ★ Infoblox ★ BGP / OSPF / EIGRP ★ MPLS / DIA ★ Network Automation (Ansible) ★ High Availability & Resiliency ★ Leaf & Spine / Core & Distribution & Access TOOLS: Cisco IOS | Cisco NX-OS | Cisco Nexus (9000/7000/5000/2000) | Cisco Catalyst | Cisco ACI | Arista EOS | Juniper MX/EX | ArubaOS | Nokia OS | Cisco Meraki | BGP | OSPF | EIGRP | vPC | STP | VDC | VXLAN | EVPN | NAT | QoS | Multicast | VRF | DMVPN | IPsec | HSRP | VRRP | GLBP | LACP | LLDP | CDP | Cisco Catalyst SD-WAN | Viptela SD-WAN | SilverPeak SD-WAN | MPLS | DIA | Metro Ethernet | Palo Alto | Fortinet | Cisco ASA | Cisco ISE | Cisco DNA | Wireshark | Ansible | TCL Shell | Python | SecureCRT | PuTTY | ServiceNow | Microsoft Teams | Zoom | Webex | Outlook | Visio CERTIFICATIONS: CCIE Routing & Switching #51201 | CCNP | CCDA | MCSE

✅ Top-Rated Freelancer (Top 1 %) ✅ 100% - Job Success Score ✅ Availability & Working Hours: (40+ hrs/week) ✅ Certified Cloud & Network Architect ✅ 12+ years experience in Enterprise Networking, Cybersecurity & Cloud Solutions ✅ AWS, Azure, GCP Architecture & Migration Specialist ✅ Infrastructure as Code: Terraform, Ansible Expert ✅ Cisco CCNA, CCNP Routing & Switching, CCNA Security Certified ✅ Certified Associate in Project Management (CAPM) ✅ Palo Alto Firewall & Security Architecture ✅ Network Security & Cybersecurity Expert, Zero Trust, VPNs, Firewalls ✅ Network Design: LAN, WAN, MPLS, VPN, Hybrid Cloud Networking ✅ Zero Trust Network Access (ZTNA) & Security Hardening ✅ Linux Administration: Red Hat & Ubuntu ✅ High Availability & Disaster Recovery Planning ✅ Cloud Automation & Monitoring ✅ Hybrid On-Prem + Cloud Integration ✅ Artificial intelligence & Machine Learning (AI\ML) ✅ Model Context Protocol (MCP) ✅ Retrieval-Augmented Generation (RAG) LLM I’m Ahmed Zain Ul Haq, a passionate architect focused on building secure, scalable, and resilient cloud and network infrastructures. I help businesses design, deploy, and secure environments using cutting-edge cloud platforms and multi-vendor networking technologies. I’m actively looking for projects involving cloud migrations, hybrid networking, cybersecurity, infrastructure automation, and enterprise security solutions. I hold multiple certifications, including: 🌐 Cloud & Architecture Certifications 📌AWS Certified Solutions Architect – Associate (SA-003) 📌 Google Cloud Certified – Professional Cloud Architect (GCP-PCA) 📌 Microsoft Certified: Azure Solutions Architect Expert (AZ-305) 📌 Microsoft Certified: Azure Network Engineer Associate (AZ-700) 🖧 Cisco Networking Certifications 📌 Cisco Certified Network Associate (CCNA) Routing & Switching (200-301) 📌 Cisco Certified Network Professional (CCNP) Enterprise Design (350-401 ENCOR) 📌 Cisco Certified Network Associate Routing and Switching (CCNA R&S) 🔐 Security Certifications 📌 Palo Alto Networks Certified Network Security Administrator (PCNSA) 🛠️ Infrastructure & Tools 📌 HashiCorp Certified: Terraform Associate (003) 🛠️ Tools Set 🔹Kubernetes 🔹Docker 🔹Terraform 🔹Ansible 🔹Prometheus 🔹Grafana 🔹jenkins 🔹Gitlab CI/CD 🔹Azure DevOps 🔹Github Actions 🔹Helm 🔹Chef 🔹AWS CloudFormation 🔹Pulumi 🔹AWS CDK 🔹OpenShift 🔹Docker Compose 🔹Microsoft Azure 🔹Google Cloud Platform 🔹Azure DevOps 🔹Azure Kubernetes Service 🔹Azure App Service 🔹Azure File Storage 🔹Azure Log Analytics 🔹Google Cloud Platform 🔹Google Kubernetes Engine 🔹Google Cloud Load Balancing 🔹Google Cloud Storage 🔹Wordpress 🔹Amazon Lightsail 🔹N8N Specialist So, whether you’re looking for expertise in AWS architecture, DevOps practices, cloud technologies, or infrastructure automation, I’m here to help. Let’s connect and discuss how I can help you optimize your cloud environment and achieve your business goals!

* Expert-level Embedded C/C++ development for MCU and Embedded Linux platforms. * Strong expertise in Embedded System Architecture, system design, and technical leadership. * Extensive experience with ARM Cortex-M/A, STM32, NXP i.MX, Nordic, ESP32, TI, and Qualcomm platforms. * Advanced knowledge of RTOS and Embedded Linux: FreeRTOS, Zephyr, Yocto, Buildroot, Linux Kernel, Device Drivers. * Experienced in BSP bring-up, bootloader development, OTA/FOTA, secure boot, and system optimization. * Strong experience in Automotive and Industrial Embedded Systems development. * Deep understanding of CAN/CAN FD, LIN, UART, SPI, I2C, Modbus, Ethernet, TCP/IP , BLE, and MQTT. * Hands-on experience with IoT, Edge AI, connected devices, and cloud-integrated embedded systems. * Experienced in debugging, hardware-software integration, and system optimization. * Experience leading engineering teams and managing embedded projects from concept to production.

Expertise in Cloud(Microsoft Azure) infrastructure, PaaS, IaaS, and SaaS as well as Compute(Server), virtual hypervisors(VMWare, HyperV ) and storage arrays(HPE, Pure, and Netapp)

I help companies design, prototype, and troubleshoot complex hardware systems, especially where mechanical, electrical, thermal, and control systems must work together reliably in demanding real-world environments. I am a former Head of R&D at Northrop Grumman Marine Systems, with experience in turbines, generators, electric motors, rotating machinery, and large-scale power systems. My work also includes combustion systems, battery systems, power electronics, embedded hardware, and full product development from concept through working prototype. I work with startups and established companies on: - hardware system design - rotating machinery and power systems - combustion, thermal, and fluid systems - battery and embedded hardware - controls, instrumentation, and industrial automation - diagnosing and solving difficult engineering problems I focus on practical, buildable solutions with strong attention to reliability, manufacturability, safety, and system integration. I’m often brought in when a project needs senior-level engineering direction to move from concept to a working system efficiently. I studied engineering and business at Stanford University and have 20+ years of experience working with venture-backed startups, helping connect engineering decisions to product development, scaling, and execution.